| IAR | immediate asthma reaction; inhibitory anal reflex; iodine-azide reaction |
|---|---|
| IDLH | immediate danger to life and health |
| IEA | immediate early antigen; immunoelectroadsorption; immunoelectrophoretic analysis; infectious equine ... |
| IEG | immediate early gene |
| IGR | immediate generalized reaction; integrated gastrin response |